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Chip Amps Amplifiers based on integrated circuits

LM1875 on TDA2030 pcb /w single rail PSU
LM1875 on TDA2030 pcb /w single rail PSU
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Old 25th December 2013, 06:59 PM   #1
riko4628 is offline riko4628
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Default LM1875 on TDA2030 pcb /w single rail PSU

So, i got this TDA2030 kit from my grandma (Yes, my grandma ), and i want to use that pcb with LM1875: http://www.soselectronic.ro/a_info/resource/p/ne019.pdf (If you want to translate something just say)

Is it possible? What do i need to change?
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Old 25th December 2013, 07:37 PM   #2
ricortes is offline ricortes  United States
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Let's see if I have attachments figured out.

There are some differences between the board you have and the LM1875 data sheet for single ended power supply. The diodes in your board are there for an extra measure of protection so you should leave them in. If you are changing voltage for higher output i.e. say 40 volts, then replace the cap going to the speaker and ones on the supply to at least 50 V rating. Most of the rest of the circuit is in the ball park as far as I could see with a cursory glance. i.e. input capacitor on your board is 2.2 uF and on the LM1875 is 1.0 uF. Shouldn't make a huge difference in functionality, maybe a bit in sound quality.
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Old 25th December 2013, 07:40 PM   #3
riko4628 is offline riko4628
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So, i don't have to change anything?
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Old 25th December 2013, 11:23 PM   #4
ricortes is offline ricortes  United States
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Not if you don't use a supply voltage higher the the original board recommends.
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